Trade-Specific Associations for Subcontractors
Trade Associations •
International Association of Bridge, Structural, Ornamental, and Reinforcing Iron Workers (IW)
International Association of Bridge, Structural, Ornamental, and Reinforcing Iron Workers (IW)
The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers, AFL-CIO is a trade association representing 120,000 union iron workers. It provides training, education, and advocacy to protect and advance the iron industry in North America.

Trusted by trade contractors across the country












- Ability to participate in a collective bargaining agreement that provides bigger paychecks, better benefits, more secure jobs, and safe working conditions
- Eligibility for Union Plus benefits and discounts
- Access to life, accident & hospital supplemental benefits for ironworkers
- 120+ years of digital magazine archives covering every aspect of the iron industry
Trade-Specific Associations for Subcontractors
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Other trade associations
National Roofing Contractors Association (NRCA)
The National Roofing Contractors Association is a community of entrepreneurial craftsmen and enterprises representing all segments of the roofing industry, including contractors, manufacturers, distributors, architects, owners, and government agencies. It’s the leading authority in the roofing industry for information, education, technology, and advocacy.
Mechanical HVAC / Plumbing
Sheet Metal and Air Conditioning Contractors' National Association (SMACNA)
The Sheet Metal and Air Conditioning Contractors’ National Association has more than 100 chapters and 3,500 members across the US, Canada, Australia, and Brazil. Its mission is to create a competitive advantage for sheet metal and air conditioning contractors through education, labor relations, standards development, industry representation, and business studies.
Construction Financial Management Association (CFMA)
The Construction Financial Management Association provides career development and networking opportunities for construction finance professionals. CFMA members are CFOs, controllers, treasurers, and staff accountants and admins working at developers; major commercial construction companies in general, specialty trades, industrial, and heavy/highway sectors; and companies that serve construction, like CPAs, outsourced accounting firms, banks, sureties, and insurance brokers.